Height-Adjustable Loading Head With Flexible Element Buffer
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Solution Overview
Problem
Existing loading devices for means of transport, such as trucks and ships, face challenges in efficiently and precisely stacking sacks or piece goods due to height adjustment mechanisms that require extensive linear guides and motors, leading to increased complexity, space requirements, and instability of the bag stacks, especially when dealing with bulk goods like cement.
Innovation Solution
A device with a longitudinally movable loading head adjusted via a flexible element and a parallelogram-like support structure, where the loading head remains stationary in the horizontal direction during height adjustments, eliminating the need for complex linear guides and motors, ensuring precise stacking and reduced installation space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a height-adjustable loading head with linear guides and motors is used, then the loading head can be adjusted in height, but the device complexity and installation space increase significantly
Solution Approach 1:
The loading head is suspended by flexible elements (ropes) that allow dynamic height adjustment. The flexible elements replace rigid linear guides, enabling the loading head to move vertically while maintaining horizontal stability through the parallelogram mechanism, thus reducing structural complexity while preserving adaptability
Solution Approach 2:
The problem of height adjustment with horizontal stability is solved by introducing a parallelogram mechanism that couples vertical and horizontal dimensions. The flexible elements provide vertical movement freedom while the parallelogram structure constrains horizontal displacement, effectively separating the adjustment degree of freedom from positional stability requirements
2Device complexity
If the loading head is adjusted in height using a flexible rope, then the structure is simplified, but the loading head experiences longitudinal offset and positioning inaccuracy
Solution Approach 1:
The flexible elements are arranged asymmetrically in a parallelogram configuration rather than symmetrically. This asymmetric arrangement creates a mechanical constraint that prevents horizontal displacement of the loading head while allowing vertical movement, thus maintaining positioning accuracy despite structural simplification
Solution Approach 2:
The parallelogram mechanism acts as an intermediary between the flexible elements and the loading head. It translates the vertical movement allowed by the flexible elements into purely vertical motion of the loading head, filtering out horizontal offset and ensuring precise positioning
3Stability of the object's composition
If multiple linear guides and motors are used for height adjustment, then the loading head position is stable, but the operational complexity and maintenance requirements increase
Solution Approach 1:
The flexible elements and parallelogram mechanism form a self-constraining system that automatically maintains horizontal stability without requiring active control from multiple motors. The mechanical geometry itself provides the stability function, reducing operational complexity and maintenance needs while preserving loading head stability
Data Source
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Figure 5~6
AI summary
An apparatus (100) for loading sacks (2) onto loading areas (301) of transportation means (300), having a longitudinally movable loading arrangement (1) comprising a feeder arrangement (3) for delivering sacks (2), a loading head (5) height-adjustably connected to an operating arrangement (4), and a conveyor buffer arrangement (6) between the feeder arrangement (3) and the loading head (5). The conveyor buffer arrangement (6) connects the loading head (5) and the feeder arrangement (3). The loading head (5) is height-adjustably mounted on the operating arrangement (4) by means of a flexible element (12) and the operating arrangement (4) is coupled to the conveyor buffer arrangement (6) via a coupling arrangement (13) to allow height adjustment of the loading head (5), so that when the loading head (5) is height-adjusted the feeder arrangement (3) moves longitudinally and the loading head (5) remains longitudinally fixed.